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A ball moving with a momemtum 5 kg "ms"^...

A ball moving with a momemtum 5 kg `"ms"^(-1)` strikes a wall. If the initial and final momenta make equal angles of `45^(@)`, then magnitude in change in momentum is

A

`5.05" kg ms"^(-1)`

B

`7.07" kg ms"^(-1)`

C

`10.00" kg ms"^(-1)`

D

`0" kg ms"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A ball moving with a speed of 10" m s"^(-1) strikes an identical ball such that after the collision the direction of each ball makes an angle 45^(@) with the original line of motion. Find the speeds of the two balls after the collision.

    A
    `v_(1)=5sqrt(2)" m"//"s", v_(2)=10sqrt(2)" m"//"s"`
    B
    `v_(1)=10sqrt(2)" m"//"s",v_(2)=10sqrt(2)" m"//"s"`
    C
    `v_(1)=5sqrt(2)" m"//"s",v_(2)=5sqrt(2)" m"//"s"`
    D
    `v_(1)=3sqrt(2)" m"//"s",v_(2)=10sqrt(2)" m"//"s"`

  • A ball of mass 0*2 kg moving with a speed of 30 m/s strikes a bat returns in opposite direction with speed of 90m/s . Magnitude of change in momentu,m of ball will be

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    Zero
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    C
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